Stroller With Linkage-Foldable Backrest
The stroller with a linkage-foldable backrest having a stroller frame convertible between an unfolded state and a folded state is provided. The folding of the stroller frame of the provided stroller drives the backrest portion to fold, so as to prevent the edge of the end portion of the backrest portion from touching the ground. The folding operation of the backrest portion according to the present invention is simple and convenient.
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This application is a Continuation of, and claims priority under 35 U.S.C. § 120 to, U.S. patent application Ser. No. 17/381,394, filed Jul. 21, 2021, and claims priority therethrough under 35 U.S.C. § 119 to Chinese Patent Application No. 202010707715.6, filed Jul. 21, 2020, the entireties of which are incorporated by reference herein.
BACKGROUND OF THE INVENTION Field of the InventionThe present invention relates to a stroller, and more particularly to a stroller with a linkage-foldable backrest.
Description of the Prior ArtStrollers are extensively applied in families with babies and infants. In order to provide strollers with better storage and portability, most current strollers include stroller frames convertible between a folded state and an unfolded state, so as to allow the strollers to be folded to exhibit a smaller volume. However, backrests of current strollers are mostly provided in a fixed type, which renders the backrests to be non-foldable. Thus, when a stroller frame is folded, the edge of end portion of the backrest will touch the ground, such that the backrest of the stroller may become dirty and the user experience may be significantly degraded. There are backrests provided with multiple pivotal structures for achieving the foldability; however, this increases the complexity in the structure of strollers and the folding of the backrests may become unsmooth.
Therefore, there is a need for a stroller having a linkage-foldable backrest so as to overcome the deficiency of the existing strollers.
SUMMARY OF THE INVENTIONIt is an object of the present invention to provide a stroller with a linkage-foldable backrest, in which the folding of a stroller frame of the stroller drives a backrest portion to fold in a simple and convenient manner, so as to prevent the end portion of the backrest portion from touching the ground.
To achieve the object above, the present invention provides a stroller with a linkage-foldable backrest, which includes a stroller frame convertible between an unfolded state and a folded state, and a support provided on the stroller frame. The support includes a seat portion and a backrest portion that can be mutually folded and unfolded, and the seat portion and the backrest portion may mutually unfold and fold in synchronization relative to the stroller frame. The backrest portion has a bending area, and the stroller includes a connecting member of a flexible structure connected between the backrest portion and the stroller frame. The folding of the seat portion relative to the backrest portion drives the bending area to bend in a direction away from the ground by the pulling of the connector on the backrest portion, reducing a distance between an upper edge and a lower edge of the backrest portion.
Compared to the existing strollers, the backrest portion of the stroller according to the present invention is provided with the bendable bending area, and a connecting member of a flexible structure connected between the backrest portion and the stroller frame. When the stroller frame of the stroller having a linkage-foldable backrest is folded, the seat portion and the backrest portion are folded in synchronization. During the folding process, the connecting member connected between the stroller frame and the backrest portion may pull the backrest portion so that the bending area will bend in a direction away from the ground, further reducing the distance between the upper edge and the lower edge of the backrest portion, thereby achieving folding of the backrest portion and preventing the edge of an end portion of the backrest from touching the ground. Hence, the folding of the stroller frame of the stroller of the present invention drives the backrest portion to fold in a simple and convenient manner, and the folding of the backrest portion prevents the edge of an end portion of the backrest portion from touching the ground.
Preferably, the connecting member of a flexible structure is connected between the backrest portion and the seat portion on the stroller frame.
Preferably, the backrest portion has a bending area formed between the upper edge and the lower edge of the backrest portion. More specifically, the bending area is formed at a center area of the backrest portion.
Preferably, the bending area includes an upper backrest portion and a lower backrest portion, and the connecting member is connected to the lower backrest portion.
Preferably, the backrest portion includes a backrest plate and a backrest protection cover of a flexible structure, wherein the backrest protection cover covers the backrest plate.
Preferably, the backrest plate includes an upper backrest plate corresponding to the upper backrest portion and a lower backrest plate corresponding to the lower backrest portion.
Preferably, the backrest plate includes an unfolding-folding portion, and the upper backrest plate and the lower backrest plate are connected by the unfolding-folding portion.
Preferably, the unfolding-folding portion forms the bending area of the backrest portion.
Preferably, the unfolding-folding portion provides a bendable linkage connection between the upper backrest plate and the lower backrest plate.
Preferably, the folding of the seat portion relative to the lower backrest plate drives the upper edge of the backrest plate away from the ground through the linkage connection provided by the unfolding-folding portion.
Preferably, the unfolding-folding portion is formed of a flexible structure.
Preferably, the unfolding-folding portion is of a creased structure.
Preferably, the unfolding-folding portion is of a linear structure that is repeatedly bendable.
Preferably, the connecting member is connected to the backrest plate by means of fusion welding.
Preferably, the connecting member and the backrest protection cover are connected by means of sewing or by a rivet.
Preferably, the connecting member is in a symmetrical arrangement on the two sides of the backrest portion.
Preferably, the connecting member is a woven band.
Preferably, the woven band and the seat portion are fixedly connected by means of sewing or by a rivet.
Preferably, the woven band and the seat portion are detachably connected by mutually coordinating male and female buckles.
Preferably, the upper backrest plate is provided with a shoulder strap hole for a shoulder strap of a five-point safety belt to pass through.
Preferably, the upper backrest plate is provided with a top shoulder strap hole and a bottom shoulder strap hole in a top-bottom facing manner on two sides of the upper backrest plate, respectively, and the shoulder strap includes an upper node that is adjustable between the top shoulder strap hole and the bottom shoulder strap hole on the same side of the shoulder strap. Thus, the height at which the shoulder strap is applied for can be adjusted to adapt to the children of different heights.
Preferably, the stroller frame includes an armrest of a collapsible structure, which is collapsed at a portion corresponding to the bending area of the backrest portion.
In order to describe the technical contents, the structural features and the technical effects of the present invention in more details, reference is made to the following description and embodiments in combination with the accompanying drawings.
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It should be noted that, the folding structure of the stroller frame 1 of the stroller 100 may be generally known to a person skilled in the art, such that the details are omitted herein for clarity.
The disclosure above provides only preferred embodiments of the present invention and is not to be construed as limitations to the scope of claims of the present invention. Therefore, any equivalent modifications made within the scope of the appended claims of the present invention are to be encompassed within the scope of the invention.
Claims
1. A stroller with a linkage-foldable backrest, comprising a stroller frame convertible between an unfolded state and a folded state and a support provided on the stroller frame, wherein the support comprises a seat portion and a backrest portion capable of mutually unfolding and folding, the seat portion and the backrest portion are mutually unfolded and folded in synchronization relative to the stroller frame; wherein the backrest portion is provided with a bendable bending area; wherein the stroller frame comprises a collapsible armrest connected thereto and configured to press the bending area of the backrest portion so as to avoid the upper edge of the upper backrest plate from touching the ground under the folded state.
2. The stroller with the linkage-foldable backrest according to claim 1, the armrest configured to collapse at a portion to provide a distance from an upper edge of the bracket portion to the ground.
3. The stroller with the linkage-foldable backrest according to claim 1, wherein the stroller comprises a connecting member of a flexible structure connected between the backrest portion and the stroller frame, wherein the folding of the seat portion relative to the backrest portion drives the bending area to bend in a direction away from the ground by pulling of the connecting member on the backrest portion, and the bending of the bending area reduces a distance between an upper edge and a lower edge of the backrest portion.
4. The stroller with the linkage-foldable backrest according to claim 3, wherein the connecting member is connected between the backrest portion and the seat portion on the stroller frame.
5. The stroller with the linkage-foldable backrest according to claim 1, wherein the bending area is formed between the upper edge and the lower edge of the backrest portion.
6. The stroller with the linkage-foldable backrest according to claim 3, wherein the backrest portion includes an upper backrest portion and a lower backrest portion separated by the bending area, and the connecting member is connected to the lower backrest portion.
7. The stroller with the linkage-foldable backrest according to claim 1, wherein the backrest portion comprises a backrest plate and a backrest protection cover covering the backrest plate.
8. The stroller with the linkage-foldable backrest according to claim 7, wherein the backrest plate comprises an upper backrest plate corresponding to the upper backrest portion and a lower backrest plate corresponding to the lower backrest portion.
9. The stroller with the linkage-foldable backrest according to claim 7, wherein the backrest plate further comprises an unfolding-folding portion connecting the upper backrest plate with the lower backrest plate.
10. The stroller with the linkage-foldable backrest according to claim 9, wherein the bending area is formed by the unfolding-folding portion.
11. The stroller with the linkage-foldable backrest according to claim 9, wherein the unfolding-folding portion provides for a bendable linkage connection between the upper backrest plate and the lower backrest plate.
12. The stroller with the linkage-foldable backrest according to claim 11, wherein the folding of the seat portion relative to the lower backrest plate drives an upper edge of the upper backrest plate in a direction away from the ground through the linkage connection provided by the unfolding-folding portion.
13. The stroller with the linkage-foldable backrest according to claim 9, wherein the unfolding-folding portion is of a flexible structure.
14. The stroller with the linkage-foldable backrest according to claim 13, wherein the unfolding-folding portion is of a creased structure.
15. The stroller with the linkage-foldable backrest according to claim 13, wherein the unfolding-folding portion is of a linear structure that is repeatedly bendable.
16. The stroller with the linkage-foldable backrest according to claim 3, wherein the connecting member is connected to the backrest plate by means of fusion welding.
17. The stroller with the linkage-foldable backrest according to claim 3, wherein the connecting member and the backrest protection cover are connected by means of sewing or by a rivet.
18. The stroller with the linkage-foldable backrest according to claim 3, wherein the connecting member is in a symmetrical arrangement on two sides of the backrest portion.
19. The stroller with the linkage-foldable backrest according to claim 3, wherein the connecting member is a woven band.
20. The stroller with the linkage-foldable backrest according to claim 19, wherein the woven band and the seat portion are fixedly connected by means of sewing or by a rivet.
21. The stroller with the linkage-foldable backrest according to claim 19, wherein the woven band and the seat portion are detachably connected by mutually coordinating male and female buckles.
22. The stroller with the linkage-foldable backrest according to claim 8, wherein the upper backrest plate is provided with a shoulder strap hole for a shoulder strap of a five-point safety belt to pass through.
23. The stroller with the linkage-foldable backrest according to claim 22, wherein the upper backrest plate is provided with a top shoulder strap hole and a bottom shoulder strap hole in a top-bottom facing manner on two sides of the upper backrest plate, respectively, and the shoulder strap includes an upper node that is adjustable between the top shoulder strap hole and the bottom shoulder strap hole on the same side of the shoulder strap.
Type: Application
Filed: Nov 28, 2023
Publication Date: Mar 21, 2024
Applicant: WONDERLAND SWITZERLAND AG (Steinhausen)
Inventor: Jialiang Yuan (Steinhausen)
Application Number: 18/520,758